#include <iostream>


void printVec4(float *data, unsigned nData, std::ostream &out = std::cout);
void plasterBodies(float *data, unsigned nData, 
				float region, float mass);
void estimateError(float *aa, float *ab, unsigned nData, float &dMax, float &dAvg);
void describeError(float *aa, float *ab, unsigned nData);
void computeOnCPU(float *bodies, float *accels, 
				  float eps, unsigned nData);
